Disinfectant production wastewater treatment device

Abstract

The invention provides a disinfectant production wastewater treatment device, and belongs to the field of disinfectant waste liquid cleaning, the disinfectant production wastewater treatment device comprises an adjustable cleaning assembly, the adjustable cleaning assembly comprises a telescopic device and a plurality of groups of telescopic rods, the periphery of the telescopic device is provided with the plurality of groups of telescopic rods, and the telescopic device is used for controlling the telescopic rods to stretch out and draw back; the purification units are arranged at one ends of the telescopic rods, and the front ends of the purification units are attached to the inner wall of the storage tank; the multiple groups of purification units comprise cleaning tools and adjustable brush assemblies; the cleaning tool is connected with the telescopic rods, the telescopic rods are driven by the telescopic device to extend outwards, the cleaning tool and the adjustable brush assembly can be driven to move outwards, then the drainage hole can be close to the inner wall of the storage tank, the brush head is matched for cleaning the inner wall of the tank body, and finally waste water left on the inner wall of the storage tank can be cleaned out.

Description

Technical Field

[0001] The invention belongs to the field of disinfectant waste liquid cleaning, and specifically relates to a disinfectant production wastewater treatment device. Background Art

[0002] The disinfectant production process generates wastewater containing various toxic components. This wastewater must be temporarily stored in dedicated tanks to prevent environmental contamination and must be regularly discharged and treated before new batches of wastewater are accepted. However, due to the varying composition of wastewater generated by different disinfectant production processes, newly injected wastewater may react chemically with residual wastewater in the tanks, releasing toxic gases. Therefore, the tanks must be cleaned regularly and thoroughly.

[0003] At present, the common cleaning method is to use a high-pressure water gun to flush from the top of the tank downwards, but this method has obvious defects: on the one hand, it is easy to form cleaning dead corners; on the other hand, some highly viscous disinfectant waste liquid will stubbornly adhere to the inner wall of the tank, and it is difficult to completely remove it by traditional water gun flushing alone, resulting in poor cleaning effect and possible residual safety hazards. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to clean the toxic liquid remaining on the inner wall of the wastewater storage tank and provide a disinfectant production wastewater treatment device to at least partially solve the problems raised in the above background technology.

[0005] The technical solution adopted by the present invention is as follows: a disinfectant production wastewater treatment device, including an adjustable cleaning component, which is configured to clean wastewater remaining on the inner wall of a storage tank.

[0006] Furthermore, the adjustable cleaning assembly includes: a telescopic device and multiple groups of telescopic rods. The telescopic device is provided with multiple groups of telescopic rods around it, and the telescopic device is used to control the extension and retraction of the telescopic rods.

[0007] Furthermore, multiple groups of purification units are arranged at one end of each of the telescopic rods, and the front end of the purification unit is attached to the inner wall of the storage tank.

[0008] Furthermore, the plurality of purification units include cleaning tools and adjustable brush assemblies.

[0009] Furthermore, a cleaning tool is connected to each telescopic rod, and the cleaning tool is used to spray a cleaning water flow onto the inner wall of the storage tank.

[0010] Furthermore, an adjustable brush assembly is provided on the upper portion of the cleaning tool, and the adjustable brush assembly is used to press against the inner wall of the storage tank and rotate to complete the cleaning of the inner wall of the storage tank.

[0011] Furthermore, the disinfectant production wastewater treatment device proposed in an embodiment of the present invention includes a drive assembly, which is arranged on the upper part of the adjustable cleaning assembly, and the drive assembly is configured to drive the adjustable cleaning assembly to rotate so that it can complete the cleaning of the inner wall of the water storage tank.

[0012] Furthermore, the adjustable brush assembly includes a transmission device, a transmission groove, a connecting rod, a support plate, a second cleaning fan and a brush head.

[0013] Furthermore, a transmission groove is provided inside the transmission device, a connecting rod is provided inside the transmission groove, the connecting rod is arranged at the upper part of the support plate, a second cleaning fan is provided at the front end of the support plate, and a plurality of groups of brush heads are provided at the front end of the second cleaning fan, and each of the brush heads is arranged at equal intervals at the front end of the second cleaning fan, and the transmission device is configured to control the up and down movement of the connecting rod and thereby control the up and down offset of the second cleaning fan.

[0014] Furthermore, the adjustable brush assembly also includes a first hydraulic press, a connecting block and a joining block.

[0015] Furthermore, the transmission device is arranged at the upper part of the connecting block, and a first hydraulic valve is provided on the side of the connecting block away from the support plate. The first hydraulic valve is used to control the extension and retraction of the brush head. A coupling block is provided inside the connecting block, and the coupling block is rotatably connected to the connecting block. The other end of the connecting block is fixed to the support plate, and the second cleaning fan is configured to rotate along the connecting block.

[0016] Furthermore, the cleaning tool includes a support plate, a first cleaning fan, a drainage hole and a water supply pipe.

[0017] Furthermore, the first hydraulic press is arranged on the upper part of the support plate, and a first cleaning fan is provided at the front end of the support plate. A plurality of groups of drain holes are provided inside the first cleaning fan, and the drain holes are evenly spaced. A water supply pipe is provided at the side end of the first cleaning fan, and the water supply pipe is connected to the water flow for cleaning. The water supply pipe is connected to each of the drain holes, and the drain holes are used to clean the inner wall of the storage tank.

[0018] Furthermore, the cleaning tool also includes bristles.

[0019] Furthermore, a plurality of groups of bristles are provided at the bottom of the first cleaning fan, and the bristles are used to clean the bottom of the storage tank.

[0020] Furthermore, the driving assembly includes a second hydraulic machine.

[0021] Furthermore, the top of the telescopic device is fixedly connected to a second hydraulic machine, and the second hydraulic machine is configured to drive the telescopic device to move up and down.

[0022] Furthermore, the driving assembly also includes a torsion device, a torsion rod and a connecting bar.

[0023] Furthermore, a connecting bar is fixedly provided on the outside of the second hydraulic machine, the upper part of the connecting bar is connected to the torsion rod, the torsion rod is arranged inside the torsion device, and the torsion device is configured to drive the second hydraulic machine to torsion.

[0024] Furthermore, the driving assembly also includes a water storage tank, an inlet fixing block, a water inlet, a drainage fixing block, a pressurizing module and a drainage outlet.

[0025] Furthermore, a water storage tank is provided on the outside of the second hydraulic cylinder, and the water storage tank is used to store wastewater generated during the production of disinfectants. The upper outer side of the water storage tank is fixedly connected to an inlet fixing block, and the interior of the inlet fixing block is provided with a water inlet, and the water inlet is used for the entry of wastewater. A drainage fixing block is provided on the bottom outer side of the water storage tank, and a pressure module is provided on the upper part of the drainage fixing block. The drain outlet is arranged at the lower part of the drainage fixing block, and the pressure module is used to accelerate the outflow of wastewater.

[0026] Beneficial effects: (1) The telescopic rod is extended outward by the telescopic device, which can drive the cleaning tool and the adjustable brush assembly to move outward, so that the hydrophobic hole can be close to the inner wall of the storage tank. The brush head can be used to clean the inner wall of the tank, and finally the wastewater remaining on the inner wall of the storage tank can be cleaned out.

[0027] (2) The first hydraulic actuator drives the brush head to move forward and backward, so that the brush head can be closely attached to the inner wall of the storage tank. The transmission device can drive the brush head to deflect up and down around the connecting block. As the brush head sweeps up and down the inner wall, the cleaning efficiency can be greatly enhanced, making the final cleaning effect more excellent. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic perspective view of a disinfectant production wastewater treatment device according to an embodiment of the present invention; Figure 2 This is a schematic cross-sectional view of a disinfectant production wastewater treatment device according to an embodiment of the present invention; Figure 3 A three-dimensional schematic diagram of an adjustable cleaning assembly according to an embodiment of the present invention; Figure 4 A schematic top view of an adjustable cleaning assembly according to an embodiment of the present invention; Figure 5 A schematic three-dimensional diagram of a purification unit according to an embodiment of the present invention; Figure 6 This is a schematic front view of a purification unit proposed in an embodiment of the present invention; Figure 7 A three-dimensional schematic diagram of a driving assembly proposed in an embodiment of the present invention.

[0029] Among them, 1. adjustable cleaning component; 2. drive component; 11. Telescopic device; 12. Telescopic rod; 30. Cleaning tool; 40. Adjustable brush assembly; 50. Purification unit; 31. Support plate; 32. First cleaning fan; 33. Drain hole; 34. Water pipe; 35. Brush; 41. Fixing platform; 42. First hydraulic press; 43. Connecting block; 44. Transmission device; 45. Transmission slot; 46. Connecting rod; 47. Joint block; 48. Support plate; 49. Second cleaning fan; 410. Brush head; 21. Twisting device; 22. Twisting rod; 23. Connecting bar; 24. Second hydraulic press; 25. Water storage tank; 26. Inlet fixing block; 27. Water inlet; 28. Drainage fixing block; 29. ​​Pressurizing module; 210. Drainage outlet.

[0030] The accompanying drawings are used to provide further understanding of the embodiments and constitute a part of the specification. They are used for explanation together with the embodiments and do not constitute a limitation of the embodiments. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection.

[0032] In the description of the embodiments, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments.

[0033] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, an embodiment of the present invention proposes a disinfectant production wastewater treatment device, including an adjustable cleaning component 1, the adjustable cleaning component 1 includes a telescopic device 11, a telescopic rod 12 and multiple groups of purification units 50, and each purification unit 50 includes a cleaning tool 30 and an adjustable brush assembly 40.

[0034] The cleaning tool 30 includes a support plate 31, a first cleaning fan 32, a hydrophobic hole 33, a water supply pipe 34 and bristles 35; the adjustable brush assembly 40 includes a fixed platform 41, a first hydraulic press 42, a connecting block 43, a transmission device 44, a transmission groove 45, a connecting rod 46, a coupling block 47, a support plate 48, a second cleaning fan 49 and a brush head 410.

[0035] In an embodiment of the present invention, a plurality of telescopic rods 12 are provided around the telescopic device 11. The telescopic device 11 can control the telescopic rods 12 to be extended and retracted, and a plurality of purification units 50 are provided at the front end of the telescopic rods 12. As the telescopic rods 12 extend outward, the purification units 50 will slowly approach the inner wall of the water storage tank 25 to be treated. When the drain hole 33 is attached to the inner wall of the water storage tank 25, the telescopic device 11 stops running. A fixed platform 41 is fixed on the upper part of the support plate 31, and a first hydraulic press 42 is fixed inside the fixed platform 41. The front end of the first hydraulic press 42 is connected to the connecting block 43. The first hydraulic press 42 can drive the connecting block 43 to extend and retract forward and backward. A connecting block 47 is provided inside the connecting block 43, and the connecting block 47 is axially connected to the connecting block 43. The connecting block 47 can rotate up and down along the inside of the connecting block 43. The second cleaning fan 49 is provided with a plurality of brush heads 410 on the outside of the second cleaning fan 49. When the first hydraulic cylinder 42 drives the connecting block 43 to extend and retract, the second cleaning fan 49 is driven to move back and forth. When the brush head 410 at the front end of the second cleaning fan 49 touches the inner wall of the water storage tank 25, the second cleaning fan 49 rotates up and down along the connecting block 43. As the second cleaning fan 49 rotates up and down, the brush head 410 at the front end is driven to rotate up and down to clean the inner wall of the water storage tank 25. By the brush head 410 sticking to the inner wall of the water storage tank 25 and cleaning it up and down, the waste liquid adhering to the inner wall of the water storage tank 25 can be scraped off, and the water flow for cleaning is sprayed on the inner wall of the water storage tank 25 by the hydrophobic hole 33, and finally the inner wall of the water storage tank 25 can be completely cleaned.

[0036] A transmission device 44 is fixedly connected to the upper part of the connecting block 43, and a transmission groove 45 is provided inside the transmission device 44. A connecting rod 46 is arranged inside the transmission groove 45. The connecting rod 46 is movably connected to the support plate 48. The transmission device 44 can control the connecting rod 46 to move up and down along the transmission groove 45. As the connecting rod 46 moves, the support plate 48 will be driven to rotate up and down along the inside of the connecting block 43. As the support plate 48 rotates, it will eventually drive the brush head 410 to rotate up and down.

[0037] A first cleaning fan 32 is provided at one end of the support plate 31, and a plurality of groups of drain holes 33 are provided inside the first cleaning fan 32. A water supply pipe 34 is provided on the outside of the first cleaning fan 32. The water supply pipe 34 is connected to the external cleaning water flow, and the water supply pipe 34 is connected to the drain holes 33. Finally, the cleaning water flow will be discharged from the drain holes 33 and act on the inner wall of the water storage tank 25 for subsequent cleaning of the brush head 410. The second hydraulic cylinder 24 drives the telescopic device 11 to move up and down, and also drives the purification unit 50 outside the telescopic device 11 to move up and down, and the twisting device 21 drives the telescopic device 11 to twist and rotate, and finally drives the purification unit 50 to move up and down and twist and rotate along the inner wall of the water storage tank 25. As the purification unit 50 moves from the top to the bottom of the water storage tank 25, in conjunction with the cleaning of the brush head 410 and the drain holes 33, the cleaning of the inside of the water storage tank 25 can be completed from top to bottom.

[0038] A plurality of groups of bristles 35 are provided at the bottom of the first cleaning fan 32. When the first cleaning fan 32 is pushed to the bottom of the water storage tank 25 by the second hydraulic press 24, the bristles 35 contact the bottom of the water storage tank 25 and cooperate with the twisting device 21 to drive the bristles 35 to twist and rotate. The bristles 35 can finally complete the cleaning of the bottom of the water storage tank 25, and the waste water generated by the cleaning is finally discharged from the drain outlet 210.

[0039] Toxic wastewater is generated during the production of disinfectants. These toxic wastewaters need to be stored in storage tanks to avoid pollution, and these wastewaters need to be discharged and treated regularly, and then new wastewater will be stored. However, since the wastewater produced by the production of different types of disinfectants is different, the wastewater generated may react chemically with the wastewater remaining in the storage tank, thereby producing toxic gases. Therefore, the storage tanks need to be cleaned regularly, and the existing equipment generally uses a special cleaning water gun to clean the inside of the tank from top to bottom when cleaning the storage tank. However, the above operation not only produces blind spots for cleaning, but also because part of the disinfectant adheres to the inner wall of the tank, the traditional cleaning method cannot remove the waste liquid adhered to the inner wall of the tank. The present invention controls the extension and contraction of multiple groups of purification units 50 through the telescopic device 11, so that the purification units 50 The hydrophobic hole 33 presses against the inner wall of the water storage tank 25, and cooperates with the first hydraulic press 42 to control the extension and contraction of the brush head 410 and make it press against the inner wall of the water storage tank 25, and the brush head 410 can clean the inner wall of the water storage tank 25 up and down. The second hydraulic press 24 and the twisting device 21 drive the purification unit 50 to move up and down and twist and rotate, and finally the purification unit 50 can complete the cleaning of the inner wall of the water storage tank 25 from top to bottom. Compared with the traditional cleaning method, the present invention can not only deeply clean the inner wall of the water storage tank 25, but also twist and rotate the purification unit 50 from top to bottom, so as to clean the inner wall of the water storage tank 25 without dead angles, and finally cooperate with the bristles 35 to clean the bottom of the water storage tank 25, completing the all-round cleaning of the water storage tank 25. The present invention not only greatly improves the cleaning effect, but also improves the cleaning efficiency.

[0040] like Figure 1 、 Figure 2 and Figure 7 As shown, an embodiment of the present invention proposes a disinfectant production wastewater treatment device, including a drive component 2, which is arranged on the upper part of an adjustable cleaning component 1, and the drive component 2 is configured to drive the adjustable cleaning component 1 to rotate so that it can complete the cleaning of the inner wall of the water storage tank.

[0041] The driving assembly 2 includes a twisting device 21, a twisting rod 22, a connecting bar 23, a second hydraulic machine 24, a water storage tank 25, an inlet fixing block 26, a water inlet 27, a drainage fixing block 28, a pressurizing module 29 and a drainage outlet 210.

[0042] In an embodiment of the present invention, a second hydraulic press 24 is fixedly connected to the upper part of the telescopic device 11, and the second hydraulic press 24 can drive the telescopic device 11 to move up and down. Connecting bars 23 are fixedly connected to both sides of the second hydraulic press 24, and a torsion rod 22 is provided on the upper part of the connecting bar 23. The torsion rod 22 is arranged inside the torsion device 21. The torsion device 21 can drive the torsion rod 22 to twist back and forth at a specific angle. As the torsion rod 22 rotates, the second hydraulic press 24 will be driven to rotate at a specific angle. The second hydraulic press 24 will eventually drive the purification unit 50 at its lower part to rotate. Since the purification unit 50 acts on the inner wall of the water storage tank 25, the waste liquid remaining on the inner wall of the water storage tank 25 can be cleared as the purification unit 50 is twisted.

[0043] A water storage tank 25 is provided on the outside of the second hydraulic press 24, and the entire adjustable cleaning component 1 is placed inside the water storage tank 25, and an inlet fixing block 26 is provided on the upper side of the water storage tank 25, and a water inlet 27 is provided on the upper part of the inlet fixing block 26. The waste liquid generated by the disinfectant production enters the water storage tank 25 from the water inlet 27, and a drainage fixing block 28 is provided on the lower side of the water storage tank 25, and a drainage outlet 210 is provided at the bottom of the drainage fixing block 28. A pressurizing module 29 is provided on the upper part of the drainage fixing block 28. The pressurizing module 29 can accelerate the discharge of waste liquid from the drainage outlet 210. After the adjustable cleaning component 1 completes cleaning the inside of the water storage tank 25, the waste liquid generated by the final cleaning is discharged from the drainage outlet 210.

[0044] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0045] The above description of the embodiment is non-limiting. The drawings show only one embodiment, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the invention, designs a similar structure and embodiment without inventiveness, they shall fall within the scope of protection.

Claims

1. A disinfectant production wastewater treatment device, characterized in that: include: An adjustable cleaning assembly (1), the adjustable cleaning assembly (1) being configured to clean wastewater remaining on the inner wall of the storage tank; Wherein, the adjustable cleaning component (1) comprises: A telescopic device (11) and a plurality of telescopic rods (12), wherein the plurality of telescopic rods (12) are arranged around the telescopic device (11), and the telescopic device (11) is used to control the telescopic movement of the telescopic rods (12); Multiple groups of purification units (50) are arranged at one end of each of the telescopic rods (12), and the front ends of the purification units (50) are attached to the inner wall of the storage tank; Multiple purification units (50) include cleaning tools (30) and adjustable brush assemblies (40); A cleaning tool (30) is connected to each telescopic rod (12), and the cleaning tool (30) is used to spray a water flow for cleaning onto the inner wall of the storage tank; The adjustable brush assembly (40) is arranged on the upper part of the cleaning tool (30), and the adjustable brush assembly (40) is used to press against the inner wall of the storage tank and rotate to complete the cleaning of the inner wall of the storage tank.

2. The disinfectant production wastewater treatment device according to claim 1, characterized in that: It comprises a driving assembly (2) arranged on the upper part of the adjustable cleaning assembly (1), wherein the driving assembly (2) is configured to drive the adjustable cleaning assembly (1) to rotate so as to complete the cleaning of the inner wall of the water storage tank.

3. The disinfectant production wastewater treatment device according to claim 1, characterized in that: The adjustable brush assembly (40) includes a transmission device (44), a transmission slot (45), a connecting rod (46), a support plate (48), a second cleaning fan (49) and a brush head (410); The transmission device (44) is provided with a transmission groove (45) inside, and a connecting rod (46) is provided inside the transmission groove (45). The connecting rod (46) is arranged on the upper part of the support plate (48). The front end of the support plate (48) is provided with a second cleaning fan (49). The front end of the second cleaning fan (49) is provided with multiple groups of brush heads (410). The brush heads (410) are arranged at equal intervals at the front end of the second cleaning fan (49). The transmission device (44) is configured to control the connecting rod (46) to move up and down, thereby controlling the up and down offset of the second cleaning fan (49).

4. The disinfectant production wastewater treatment device according to claim 3, characterized in that: The adjustable brush assembly (40) further includes a first hydraulic machine (42), a connecting block (43) and a joining block (47); The transmission device (44) is arranged on the upper part of the connecting block (43); a first hydraulic pressure device (42) is provided on the side of the connecting block (43) away from the support plate (48); the first hydraulic pressure device (42) is used to control the forward and backward extension of the brush head (410); a coupling block (47) is provided inside the connecting block (43); the coupling block (47) is rotatably connected to the connecting block (43); the other end of the connecting block (43) is fixedly connected to the support plate (48); and the second cleaning fan (49) is configured to rotate along the connecting block (43).

5. The disinfectant production wastewater treatment device according to claim 1, characterized in that: The cleaning tool (30) comprises a support plate (31), a first cleaning fan (32), a drainage hole (33) and a water delivery pipe (34); A first hydraulic press (42) is provided on the upper portion of the support plate (31), a first cleaning fan (32) is provided at the front end of the support plate (31), a plurality of groups of drain holes (33) are provided inside the first cleaning fan (32), and the drain holes (33) are evenly spaced. A water supply pipe (34) is provided at the side end of the first cleaning fan (32), and the water supply pipe (34) is externally connected to a water flow for cleaning. The water supply pipe (34) is connected to each drain hole (33), and the drain hole (33) is used to clean the inner wall of the storage tank.

6. The disinfectant production wastewater treatment device according to claim 5, characterized in that: The cleaning tool (30) further includes bristles (35); The bottom of the first cleaning fan (32) is provided with a plurality of groups of bristles (35), and the bristles (35) are used to clean the bottom of the storage tank.

7. The disinfectant production wastewater treatment device according to claim 2, characterized in that: The drive assembly (2) includes a second hydraulic device (24); The top of the telescopic device (11) is fixedly connected to the second hydraulic device (24), and the second hydraulic device (24) is configured to drive the telescopic device (11) to move up and down.

8. The disinfectant production wastewater treatment device according to claim 7, characterized in that: The driving assembly (2) further includes a twisting device (21), a twisting rod (22) and a connecting bar (23); The second hydraulic press (24) is fixedly provided with a connecting bar (23) on the outside, the upper part of the connecting bar (23) is connected to the torsion rod (22), the torsion rod (22) is arranged inside the torsion device (21), and the torsion device (21) is configured to drive the second hydraulic press (24) to torsion.

9. The disinfectant production wastewater treatment device according to claim 8, characterized in that: The driving assembly (2) further includes a water storage tank (25), an inlet fixing block (26), a water inlet (27), a drainage fixing block (28), a pressurizing module (29) and a drainage outlet (210); A water storage tank (25) is provided on the outside of the second hydraulic press (24), and the water storage tank (25) is used to store wastewater generated during the production of disinfectants. The upper outer side of the water storage tank (25) is fixedly connected to an inlet fixed block (26), and the interior of the inlet fixed block (26) is provided with a water inlet (27), and the water inlet (27) is used for the entry of wastewater. A drainage fixed block (28) is provided on the outer side of the bottom of the water storage tank (25), and a pressurizing module (29) is provided on the upper part of the drainage fixed block (28). The drainage port (210) is provided at the lower part of the drainage fixed block (28), and the pressurizing module (29) is used to accelerate the outflow of wastewater.

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